Ruby on rails 索引名“；索引“U名称”；太长了；限制为63个字符
当我运行rails迁移命令时。我得到的索引名太长。 我的迁移文件Ruby on rails 索引名“；索引“U名称”；太长了；限制为63个字符,ruby-on-rails,ruby,postgresql,ruby-on-rails-4,Ruby On Rails,Ruby,Postgresql,Ruby On Rails 4,当我运行rails迁移命令时。我得到的索引名太长。 我的迁移文件 class AddMissingIndices < ActiveRecord::Migration def change # We'll explicitly specify its name, as the auto-generated name is too long and exceeds 63 # characters limitation. add_index :mailboxer_co
class AddMissingIndices < ActiveRecord::Migration
def change
# We'll explicitly specify its name, as the auto-generated name is too long and exceeds 63
# characters limitation.
add_index :mailboxer_conversation_opt_outs, [:unsubscriber_id, :unsubscriber_type],
name: 'index_mailboxer_conversation_opt_outs_on_unsubscriber_id_type'
add_index :mailboxer_conversation_opt_outs, :conversation_id
add_index :mailboxer_notifications, :type
add_index :mailboxer_notifications, [:sender_id, :sender_type]
# We'll explicitly specify its name, as the auto-generated name is too long and exceeds 63
# characters limitation.
add_index :mailboxer_notifications, [:notified_object_id, :notified_object_type],
name: 'index_mailboxer_notifications_on_notified_object_id_and_type'
add_index :mailboxer_receipts, [:receiver_id, :receiver_type]
end
end
class AddMissingIndicatesvalidate\u index\u length！'
/home/sharat/.rvm/gems/ruby-2.4.3/gems/activerecord-5.2.0/lib/active\u record/connection\u adapters/abstract/schema\u语句。rb:1166:inadd\u index'
/home/sharat/.rvm/gems/ruby-2.4.3/gems/activerecord-5.2.0/lib/active\u record/connection\u adapters/abstract/schema\u statements.rb:315:ineach'
/home/sharat/.rvm/gems/ruby-2.4.3/gems/activerecord-5.2.0/lib/active\u record/connection\u adapters/abstract/schema\u语句。rb:314:in块中方法_缺失'
/home/sharat/.rvm/gems/ruby-2.4.3/gems/activerecord-5.2.0/lib/active\u record/migration.rb:840:insay\u with\u time'
/home/sharat/.rvm/gems/ruby-2.4.3/gems/activerecord-5.2.0/lib/active\u record/migration.rb:860:increate\u table'
/home/sharat/.rvm/gems/ruby-2.4.3/gems/activerecord-5.2.0/lib/active\u record/migration/compatibility.rb:75:inmethod\u missing'
/home/sharat/rahul/Fleet-Latest/db/migrate/20170425092621\u add\u conversation\u optout.mailboxer\u engine.rb:4:in因此，除非您真的需要它并希望重新编译，否则63是标识符的硬限制您可以尝试使用自定义（更短）名称创建索引：
add_index（：accounts，[：branch_id，：party_id]，unique:true，name:'my_custom_and_shorter_name'）
由于您已经有了
名称add_index（：accounts，[：branch_id，：party_id]，unique:true，name:'my_custom_and_shorter_name'）
由于您已经有了
名称